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1. 发明专利

GB638580A Improvements in the anti-shrinking treatment of animal fibres 未知
公开(公告)号：GB638580A
公开(公告)日：1950-06-14
申请号：GB2269347
申请日：1947-08-15
申请人： STEVENSONS DYERS LTD , JOHN LEONARD RAYNES , FRANCIS MALCOLM STEVENSON
IPC分类号： D06M11/50
摘要： Textile materials made of or containing wool or other animal fibre are treated with a dilute aqueous solution of a permanganate at a temperature not above 60 DEG C. and a pH between 5 and 10, this treatment being preceded or followed by treatment with a solution containing 0.5-10 per cent by weight of a sulphur-containing reducing agent at a pH between 5 and 10.5. The tendency of the materials to shrink when washed is thus reduced. The permanganate may be an alkali or alkaline-earth permanganate and the reducing agent may be a sulphite, bisulphite, metabisulphite or hydrosulphite of an alkali metal, calcium, magnesium or ammonium. The permanganate solution may be buffered by addition of zinc sulphate. The materials treated may be loose wool, slubbing, yarn, fabrics or garments, in the oil or scoured state, and the animal fibre may be mixed with cellulosic fibres such as cotton or rayon, or rubberised threads. The treatment may be applied before or after dyeing. In an example, wool yarn is treated at atmospheric temperature with a dilute solution of potassium permanganate containing zinc sulphate and a wetting agent, e.g. a sulphonated fatty alcohol or an ethylene-oxide condensation product, and the material is then drained and treated with a 2 per cent solution of sodium bisulphite at 40 DEG C. Specification 569,730 is referred to.

2. 发明专利

GB569730A Improvements in the anti-shrinking treatment of animal fibres 未知
公开(公告)号：GB569730A
公开(公告)日：1945-06-06
申请号：GB956443
申请日：1943-06-15
申请人： JOHN LEONARD RAYNES , FRANCIS MALCOLM STEVENSON , STEVENSONS DYERS LTD
IPC分类号： D06L3/06 , D06L4/23 , D06L4/27 , D06M11/30 , D06M11/50
摘要： Fabrics or other textile materials consisting wholly or partly of wool or other animal fibre are treated with an aqueous solution of a permanganate and with either a dilute aqueous solution or suspension of a nitrogen-chloro compound or of an alkali metal or alkaline earth metal hypochlorite or hypobromite, in order to reduce their tendency to shrink. The materials may be treated with the permanganate and hypochlorite or hypobromite, together or in either order. The process is applicable to wool materials containing cellulosic fibres such as cotton or rayon. The term nitrogen-chloro compound includes those compounds in which the chlorine atom is directly attached to the nitrogen atom. Specified compounds are nitrogen trichloride, monochloramine, p-toluene sulphonchloramide and sodium-o-dichlorobenzene sulphonchloramide. Metallic salts such as magnesium sulphate, calcium chloride, calcium acetate, barium chloride, barium acetate and/or zinc sulphate may be added to the hypobromite or hypochlorite solution. The pH values of the solutions are preferably adjusted to 5 to 6 for the permanganate solutions, 1 to 2 for the nitrogen-chloro compound solution and 8 to 10 for the hypohalide solution. To the permanganate solution may be added salts such as magnesium sulphate, calcium chloride, barium chloride and zinc sulphate, alone or in admixture, and discolouration due to permanganate is removed from the materials by bisulphite or sulphurous acid. In the examples: (1) wool is treated at 40 DEG C. with an aqueous acidified solution of potassium permanganate. The material is rinsed and treated in a solution of monochloramine. Finally, the wool is bleached with a solution of sodium bisulphite. (2) Botany yarn is treated with an acidified solution of potassium permanganate, rinsed, freed from acid by sodium sesquicarbonate and treated in a cold aqueous solution containing sodium hypochlorite and calcium chloride. Antichlor treatment with acidified bisulphite is applied. (3) Wool is treated in a bath containing potassium permanganate, sodium hypochlorite, calcium chloride, zinc sulphate and sulphonated fatty alcohol. (5) Botany yarn is treated in a bath containing sodium hypochlorite, calcium chloride and sulphonated fatty alcohol. A dilute solution of potassium permanganate is then added, with subsequent addition of acidified bisulphite solution to remove the discolouration. (7) Botany yarn is treated with an acidified solution of permanganate, and then with an acidified solution of sodium-p-toluene sulphonchloramide. Discolouration is removed by the addition of bisulphite. The treatment of the invention facilitates subsequent dyeing operations.

3. 发明专利

IE17211L ANTI-SHRINK TREATMENT OF WOOLLENS 未知
公开(公告)号：IE17211L
公开(公告)日：1944-12-15
申请号：IE35347
申请日：1947-06-13
申请人： STEVENSONS DYERS LTD , JOHN LEONARD RAYNES , FRANCIS MALCOLM STEVENSON
IPC分类号： D06M3/08

4. 发明专利

GB570582A Improvements in the anti-shrinking treatment of animal fibres 未知
公开(公告)号：GB570582A
公开(公告)日：1945-07-12
申请号：GB716545
申请日：1943-06-15
申请人： JOHN LEONARD RAYNES , FRANCIS MALCOLM STEVENSON , STEVENSONS DYERS LTD
IPC分类号： D06M11/30
摘要： Animal fibres, either alone or mixed with other fibres, are treated with a dilute aqueous solution or dispersion of a stannous compound, and subsequently either with an aqueous solution or dispersion of a nitrogen-chloro compound, or with a dilute aqueous solution of an alkali metal or alkaline earth metal hypochlorite or hypobromite, in order to reduce their tendency to shrink. The process is applicable to wool materials containing cellulosic fibres such as cotton or rayon. The term nitrogen chloro compound includes those compounds such as nitrogen trichloride, monochloramine, p-toluene sulphonchloramide and sodium - o - dichlorobenzene sulphonchloramide, in which the chlorine atom is directly attached to the nitrogen atom. Metallic salts such as magnesium sulphate, calcium chloride, calcium acetate, barium chloride, barium acetate and zinc sulphate, alone or in admixture may be added to the hypohalite solution. In the examples: (1) Botany yarn is treated in a dispersion of stannous salts and then in an acidified solution of monochloramine. Antichlor treatment with sulphite, bisulphite or thiosulphite is subsequently applied; (4) Botany yarn is treated in a dispersion of stannous salts and then in an acidified solution of sodium - p - toluenesulphonchloramide; (6) Botany yarn is treated in a dispersion of stannous salts and then in a bath of sodium hypochlorite; (7) Botany yarn is treated in a dispersion of stannous salts and then in a solution containing sodium hypobromite and calcium chloride. The treatment of the invention facilitates subsequent dyeing operations. Specification 569,730 is referred to.

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